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<h4 id="&#x7A0B;&#x5E8F;&#x8BA1;&#x6570;&#x5668;&#xFF08;&#x7EBF;&#x7A0B;&#x79C1;&#x6709;&#xFF09;">&#x7A0B;&#x5E8F;&#x8BA1;&#x6570;&#x5668;&#xFF08;&#x7EBF;&#x7A0B;&#x79C1;&#x6709;&#xFF09;</h4>
<p>&#x5F53;&#x524D;&#x7EBF;&#x7A0B;&#x6240;&#x6267;&#x884C;&#x7684;&#x5B57;&#x8282;&#x7801;&#x7684;&#x884C;&#x53F7;&#x6307;&#x793A;&#x5668;</p>
<p>&#x5728;&#x865A;&#x62DF;&#x673A;&#x4E2D;&#x552F;&#x4E00;&#x4E00;&#x4E2A;&#x6CA1;&#x6709;&#x89C4;&#x5B9A;&#x4EFB;&#x4F55;OutOfMemoryError&#x60C5;&#x51B5;&#x7684;&#x533A;&#x57DF;</p>
<h4 id="&#x865A;&#x62DF;&#x673A;&#x6808;&#xFF08;&#x7EBF;&#x7A0B;&#x79C1;&#x6709;&#xFF09;">&#x865A;&#x62DF;&#x673A;&#x6808;&#xFF08;&#x7EBF;&#x7A0B;&#x79C1;&#x6709;&#xFF09;</h4>
<p>&#x63CF;&#x8FF0;Java&#x65B9;&#x6CD5;&#x6267;&#x884C;&#x7684;&#x5185;&#x5B58;&#x6A21;&#x578B;</p>
<p>&#x6BCF;&#x4E2A;&#x65B9;&#x6CD5;&#x5728;&#x6267;&#x884C;&#x7684;&#x540C;&#x65F6;&#x4F1A;&#x521B;&#x5EFA;&#x51FA;&#x4E00;&#x4E2A;<strong>&#x6808;&#x5E27;</strong>&#xFF0C;&#x7528;&#x4E8E;&#x5B58;&#x50A8;&#x5C40;&#x90E8;&#x53D8;&#x91CF;&#x8868;&#x3001;&#x64CD;&#x4F5C;&#x6570;&#x6808;&#x3001;&#x52A8;&#x6001;&#x94FE;&#x63A5;&#x3001;&#x65B9;&#x6CD5;&#x51FA;&#x53E3;&#x7B49;</p>
<h4 id="&#x672C;&#x5730;&#x65B9;&#x6CD5;&#x533A;&#xFF08;&#x7EBF;&#x7A0B;&#x79C1;&#x6709;&#xFF09;">&#x672C;&#x5730;&#x65B9;&#x6CD5;&#x533A;&#xFF08;&#x7EBF;&#x7A0B;&#x79C1;&#x6709;&#xFF09;</h4>
<p>&#x672C;&#x5730;&#x65B9;&#x6CD5;&#x6808;&#x4E3A;Native&#x65B9;&#x6CD5;&#x670D;&#x52A1;</p>
<h4 id="&#x5806;&#xFF08;heap-&#x7EBF;&#x7A0B;&#x5171;&#x4EAB;&#xFF09;-&#x8FD0;&#x884C;&#x65F6;&#x6570;&#x636E;&#x533A;">&#x5806;&#xFF08;Heap-&#x7EBF;&#x7A0B;&#x5171;&#x4EAB;&#xFF09;-&#x8FD0;&#x884C;&#x65F6;&#x6570;&#x636E;&#x533A;</h4>
<p>&#x521B;&#x5EFA;&#x7684;&#x5BF9;&#x8C61;&#x548C;&#x6570;&#x7EC4;&#x90FD;&#x4FDD;&#x5B58;&#x5728;Java&#x5806;&#x5185;&#x5B58;&#x4E2D;&#xFF0C;&#x4E5F;&#x662F;&#x5783;&#x573E;&#x6536;&#x96C6;&#x5668;&#x8FDB;&#x884C;&#x5783;&#x573E;&#x6536;&#x96C6;&#x6700;&#x91CD;&#x8981;&#x7684;&#x5185;&#x5B58;&#x533A;&#x57DF;</p>
<p>&#x53EF;&#x7EC6;&#x5206;&#x4E3A;&#x65B0;&#x751F;&#x4EE3;&#x548C;&#x8001;&#x5E74;&#x4EE3;</p>
<h4 id="&#x65B9;&#x6CD5;&#x533A;&#x6C38;&#x4E45;&#x533A;">&#x65B9;&#x6CD5;&#x533A;/&#x6C38;&#x4E45;&#x533A;</h4>
<p>&#x5B58;&#x50A8;&#x88AB;JVM&#x52A0;&#x8F7D;&#x7684;&#x7C7B;&#x4FE1;&#x606F;&#x3001;&#x5E38;&#x91CF;&#x3001;&#x9759;&#x6001;&#x53D8;&#x91CF;&#x3001;&#x5373;&#x65F6;&#x7F16;&#x8BD1;&#x5668;&#x7F16;&#x8BD1;&#x540E;&#x7684;&#x4EE3;&#x7801;</p>
<p>&#x5305;&#x62EC;<strong>&#x8FD0;&#x884C;&#x65F6;&#x5E38;&#x91CF;&#x6C60;</strong></p>
<h3 id="&#x5783;&#x573E;&#x56DE;&#x6536;&#x4E0E;&#x7B97;&#x6CD5;">&#x5783;&#x573E;&#x56DE;&#x6536;&#x4E0E;&#x7B97;&#x6CD5;</h3>
<h3 id="cms">CMS</h3>
<h4 id="&#x4E09;&#x8272;&#x6807;&#x8BB0;">&#x4E09;&#x8272;&#x6807;&#x8BB0;</h4>
<ul>
<li><p>&#x9ED1;&#xFF1A;&#x6807;&#x8BB0;&#x5B8C;&#x6210;</p>
</li>
<li><p>&#x767D;&#xFF1A;&#x6CA1;&#x6709;&#x904D;&#x5386;</p>
</li>
<li><p>&#x7070;&#xFF1A;&#x5B69;&#x5B50;&#x8FD8;&#x6CA1;&#x6709;&#x6807;&#x8BB0;</p>
</li>
</ul>
<h3 id="g1">G1</h3>
<h4 id="satb-snapshot-at-the-beginning">SATB Snapshot At the Beginning</h4>
<h3 id="zgc">ZGC</h3>
<h4 id="colored-pointers">Colored Pointers</h4>
<h3 id="java&#x56DB;&#x79CD;&#x5F15;&#x7528;&#x7C7B;&#x578B;">Java&#x56DB;&#x79CD;&#x5F15;&#x7528;&#x7C7B;&#x578B;</h3>
<h4 id="&#x5F3A;&#x5F15;&#x7528;">&#x5F3A;&#x5F15;&#x7528;</h4>
<h4 id="&#x8F6F;&#x5F15;&#x7528;">&#x8F6F;&#x5F15;&#x7528;</h4>
<h4 id="&#x5F31;&#x5F15;&#x7528;">&#x5F31;&#x5F15;&#x7528;</h4>
<h4 id="&#x865A;&#x5F15;&#x7528;">&#x865A;&#x5F15;&#x7528;</h4>
<h3 id="java-ionio">Java IO/NIO</h3>
<p>IO&#x9762;&#x5411;&#x6D41;&#xFF0C;NIO&#x9762;&#x5411;&#x7F13;&#x51B2;&#x533A;</p>
<h3 id="jvm&#x7C7B;&#x52A0;&#x8F7D;&#x5668;">JVM&#x7C7B;&#x52A0;&#x8F7D;&#x5668;</h3>
<p>&#x5206;&#x4E3A;5&#x4E2A;&#x90E8;&#x5206;&#xFF1A;&#x52A0;&#x8F7D;&#xFF0C;&#x9A8C;&#x8BC1;&#xFF0C;&#x51C6;&#x5907;&#xFF0C;&#x89E3;&#x6790;&#xFF0C;&#x521D;&#x59CB;&#x5316;</p>
<h4 id="&#x52A0;&#x8F7D;">&#x52A0;&#x8F7D;</h4>
<p>&#x5728;&#x5185;&#x5B58;&#x533A;&#x4E2D;&#x751F;&#x6210;&#x4E00;&#x4E2A;&#x4EE3;&#x8868;&#x8FD9;&#x4E2A;&#x7C7B;&#x7684;java.lang.Class&#x5BF9;&#x8C61;&#xFF0C;&#x4F5C;&#x4E3A;&#x65B9;&#x6CD5;&#x533A;&#x8FD9;&#x4E2A;&#x7C7B;&#x7684;&#x5404;&#x79CD;&#x6570;&#x636E;&#x7684;&#x5165;&#x53E3;</p>
<h4 id="&#x9A8C;&#x8BC1;">&#x9A8C;&#x8BC1;</h4>
<p>&#x786E;&#x4FDD;class&#x6587;&#x4EF6;&#x7684;&#x5B57;&#x8282;&#x6D41;&#x4E2D;&#x5305;&#x542B;&#x7684;&#x4FE1;&#x606F;&#x662F;&#x5426;&#x7B26;&#x5408;&#x5F53;&#x524D;&#x865A;&#x62DF;&#x673A;&#x7684;&#x8981;&#x6C42;</p>
<h4 id="&#x51C6;&#x5907;">&#x51C6;&#x5907;</h4>
<p>&#x5728;&#x65B9;&#x6CD5;&#x533A;&#x4E2D;&#x5206;&#x914D;&#x8FD9;&#x4E9B;&#x53D8;&#x91CF;&#x6240;&#x4F7F;&#x7528;&#x7684;&#x5185;&#x5B58;&#x7A7A;&#x95F4;</p>
<pre><code class="lang-Java"><span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">int</span> v = <span class="hljs-number">8080</span>;<span class="hljs-comment">//&#x53D8;&#x91CF;v&#x5728;&#x51C6;&#x5907;&#x9636;&#x6BB5;&#x540E;&#x7684;&#x521D;&#x59CB;&#x503C;&#x4E3A;0&#x800C;&#x4E0D;&#x662F;8080&#xFF0C;&#x8D4B;&#x503C;&#x662F;&#x5728;&#x7A0B;&#x5E8F;&#x7F16;&#x8BD1;&#x540E;&#xFF0C;&#x5B58;&#x653E;&#x4E8E;&#x7C7B;&#x6784;&#x9020;&#x5668;&lt;client&gt;&#x4E2D;</span>
<span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">final</span> <span class="hljs-keyword">int</span> v = <span class="hljs-number">8080</span>;<span class="hljs-comment">//&#x5728;&#x7F16;&#x8BD1;&#x9636;&#x6BB5;&#x4F1A;&#x4E3A;v&#x751F;&#x6210;ConstantValue&#x5C5E;&#x6027;&#xFF0C;&#x51C6;&#x5907;&#x9636;&#x6BB5;&#x6839;&#x636E;ConstantValue&#x5C5E;&#x6027;&#x5C06;v&#x8D4B;&#x503C;&#x4E3A;8080</span>
</code></pre>
<h4 id="&#x89E3;&#x6790;">&#x89E3;&#x6790;</h4>
<p>&#x865A;&#x62DF;&#x673A;&#x5C06;&#x5E38;&#x91CF;&#x6C60;&#x4E2D;&#x7684;&#x7B26;&#x53F7;&#x5F15;&#x7528;&#x66FF;&#x6362;&#x4E3A;&#x76F4;&#x63A5;&#x5F15;&#x7528;&#x7684;&#x8FC7;&#x7A0B;</p>
<p>&#x7B26;&#x53F7;&#x5F15;&#x7528;&#xFF1A;</p>
<ol>
<li>CONSTANT_Class_info</li>
<li>CONSTANT_Field_info</li>
<li>CONSTANT_Method_info</li>
</ol>
<h4 id="&#x7B26;&#x53F7;&#x5F15;&#x7528;">&#x7B26;&#x53F7;&#x5F15;&#x7528;</h4>
<h4 id="&#x76F4;&#x63A5;&#x5F15;&#x7528;">&#x76F4;&#x63A5;&#x5F15;&#x7528;</h4>
<h4 id="&#x521D;&#x59CB;&#x5316;">&#x521D;&#x59CB;&#x5316;</h4>
<p>&#x5F00;&#x59CB;&#x771F;&#x6B63;&#x6267;&#x884C;&#x7C7B;&#x4E2D;&#x5B9A;&#x4E49;&#x7684;Java&#x7A0B;&#x5E8F;&#x4EE3;&#x7801;</p>
<h4 id="&#x7C7B;&#x6784;&#x9020;&#x5668;">&#x7C7B;&#x6784;&#x9020;&#x5668;<client></client></h4>
<p>&#x521D;&#x59CB;&#x5316;&#x9636;&#x6BB5;&#x6267;&#x884C;&#x7C7B;&#x6784;&#x9020;&#x5668;<client>&#x65B9;&#x6CD5;&#x7684;&#x8FC7;&#x7A0B;</client></p>
<p>&#x5982;&#x679C;&#x4E00;&#x4E2A;&#x7C7B;&#x4E2D;&#x6CA1;&#x6709;&#x9759;&#x6001;&#x53D8;&#x91CF;&#x8D4B;&#x503C;&#xFF0C;&#x4E5F;&#x6CA1;&#x6709;&#x9759;&#x6001;&#x8BED;&#x53E5;&#x5757;&#xFF0C;&#x90A3;&#x4E48;&#x7F16;&#x8BD1;&#x5668;&#x53EF;&#x4EE5;&#x4E0D;&#x4E3A;&#x8FD9;&#x4E2A;&#x7C7B;&#x751F;&#x6210;<client>()&#x65B9;&#x6CD5;</client></p>
<h4 id="&#x7C7B;&#x52A0;&#x8F7D;&#x5668;">&#x7C7B;&#x52A0;&#x8F7D;&#x5668;</h4>
<p>&#x542F;&#x52A8;&#x7C7B;&#x52A0;&#x8F7D;&#x5668;</p>
<p>&#x6269;&#x5C55;&#x7C7B;&#x52A0;&#x8F7D;&#x5668;</p>
<p>&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x7C7B;&#x52A0;&#x8F7D;&#x5668;</p>
<h3 id="&#x8C03;&#x4F18;">&#x8C03;&#x4F18;</h3>
<p>HotSpot&#x53C2;&#x6570;&#x5206;&#x7C7B;</p>
<blockquote>
<p>&#x6807;&#x51C6;&#xFF1A;- &#x5F00;&#x5934;&#xFF0C;&#x6240;&#x6709;HotSpot&#x90FD;&#x652F;&#x6301;</p>
<p>&#x975E;&#x6807;&#x51C6;&#xFF1A; -X &#x5F00;&#x5934;&#xFF0C;&#x7279;&#x5B9A;&#x7248;&#x672C;HotSpot&#x652F;&#x6301;&#x7279;&#x5B9A;&#x6307;&#x4EE4;</p>
<p>&#x4E0D;&#x7A33;&#x5B9A;&#xFF1A;-XX &#x5F00;&#x5934;&#xFF0C;&#x4E0B;&#x4E2A;&#x7248;&#x672C;&#x53EF;&#x80FD;&#x53D6;&#x6D88;</p>
</blockquote>
<p>arthas&#x5DE5;&#x5177;</p>

                                
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